Polished up the inside of the right bellcrank using emery cloth and air drill. Turns freely now. Cut spacers from aluminum tube stock that fit in the WD-721 bellcranks. Gave them a quick shot of primer. While that was drying, I marked the location of the hole on the right bellcrank where the Dynon A/P servo arm attaches and drilled to #13, followed by a #12 reamer. Assembled the bellcranks with rod ends from the long and short pushrods.